Ministry of Earth Sciences
Heavy rainfall very likely at isolated places over Odisha, Telangana, Karnataka, Kerala, Mahe, Tamilnadu, Puducherry & Karaikal on 15th April
Heavy rainfall very likely at isolated places over Coastal & South Interior Karnataka, Kerala & Mahe and Tamilnadu, Puducherry & Karaikal on 16th April
Thunderstorm with lightning & gusty wind likely at isolated places over Sub-Himalayan West Bengal, Sikkim, Assam, Meghalaya, Nagaland, Manipur, Mizoram & Tripura on 19th April
According to the National Weather Forecasting Centre of the India Meteorological Department :
All India Impact Based Weather Warning Bulletin
15 April : ♦ Thunderstorm with lightning, hail & gusty winds  very likely at isolated places over Telangana; with lightning, hail & gusty winds  very likely at isolated places over Madhya Maharashtra, coastal Andhra Pradesh & Yanam, Odisha and Chhattisgarh; with lightning & gusty winds  at isolated places over Rayalaseema, Marathwada; with lightning & gusty winds  at isolated places over Jammu, Kashmir, Ladakh, Gilgit-Baltistan & Muzaffarabad, Rajasthan, Punjab, Haryana, Chandigarh & Delhi, West Uttar Pradesh, Vidarbha, Assam & Meghalaya, Nagaland, Manipur, Mizoram & Tripura, Coastal Andhra Pradesh & Yanam, Tamilnadu, Puducherry & Karaikal and Kerala & Mahe and with lightning at isolated places over Himachal Pradesh, Uttarakhand, Madhya Pradesh, Arunachal Pradesh, Jharkhand, Gangetic West Bengal, Andaman & Nicobar Islands, Konkan & Goa, Karnataka and Lakshadweep.
- Heavy rainfall very likely at isolated places over Odisha, Telangana, Karnataka, Kerala & Mahe and Tamilnadu, Puducherry & Karaikal.
Heat Wave conditions very likely in isolated pockets over Haryana and Saurashtra & Kutch.
16 April : ♦ Thunderstorm with lightning, hail & gusty winds  very likely at isolated places over Jammu, Kashmir, Ladakh, Gilgit-Baltistan & Muzaffarabad; with lightning & gusty winds  at isolated places over Assam & Meghalaya; with lightning & gusty winds  at isolated places over Himachal Pradesh, Punjab, Rajasthan, Chhattisgarh, Jharkhand, Gangetic West Bengal, Nagaland, Manipur, Mizoram & Tripura, Telangana, Tamilnadu, Puducherry & Karaikal and Kerala & Mahe and with lightning at isolated places over East Madhya Pradesh, Vidarbha, Sub-Himalayan West Bengal & Sikkim, Madhya Maharashtra, Marathwada, Odisha, Coastal Andhra Pradesh & Yanam, Rayalaseema, Arunachal Pradesh, Andaman & Nicobar Islands, Karnataka and Lakshadweep.
- Heavy rainfall very likely at isolated places over Coastal & South Interior Karnataka, Kerala & Mahe and Tamilnadu, Puducherry & Karaikal.
- Duststorm/Thunderstorm with gusty winds  very likely at isolated places over West Rajasthan.
17 April : ♦ Thunderstorm with lightning, hail & gusty wind  very likely at isolated places over Sub-Himalayan West Bengal & Sikkim; with lightning, hail & gusty wind  at isolated places over Jammu & Kashmir, Ladakh, Gilgit-Baltistan & Muzaffarabad, Himachal Pradesh, Uttarakhand, Haryana, Chandigarh & Delhi and Punjab; with lightning & gusty wind  at isolated places over Rajasthan, Assam & Meghalaya and Nagaland, Manipur, Mizoram & Tripura; with lightning & gusty wind  at isolated places over West Uttar Pradesh, Chhattisgarh, Jharkhand, Gangetic West Bengal and Kerala & Mahe and with lightning at isolated places over Vidarbha, Bihar, Andaman & Nicobar Islands, Arunachal Pradesh, Coaatal & South Interior Karnataka, Tamilnadu, Puducherry & Karaikal and Lakshadweep.
- Heavy rainfall very likely at isolated places over Jammu & Kashmir, Ladakh, Gilgit-Baltistan & Muzaffarabad, Himachal Pradesh, Kerala & Mahe and Tamilnadu, Puducherry & Karaikal.
- Duststorm/Thunderstorm with gusty winds  very likely at isolated places over Rajasthan.
18 April : ♦ Thunderstorm with lightning, hail & gusty wind  likely at isolated places over Uttarakhand; with lightning & gusty wind  at isolated places over Sub-Himalayan West Bengal & Sikkim, Nagaland, Manipur, Mizoram & Tripura and Assam & Meghalaya; with lightning & gusty wind  at isolated places over Jammu & Kashmir, Ladakh, Gilgit- Baltistan & Muzaffarabad, Himachal Pradesh, Haryana, Chandigarh & Delhi, Punjab, East Uttar Pradesh, Jharkhand, Gangetic West Bengal and Kerala & Mahe and with lightning at isolated places over Bihar, Andaman & Nicobar Islands, Arunachal Pradesh, Tamilnadu, Puducherry & Karaikal and Lakshadweep.
- Heavy rainfall likely at isolated places over Jammu & Kashmir, Ladakh, Gilgit-Baltistan & Muzaffarabad, Himachal Pradesh and Kerala & Mahe.
- Duststorm/Thunderstorm with gusty winds  likely at isolated places over East Rajasthan.
- 19 April : Thunderstorm with lightning & gusty wind  likely at isolated places over Sub-Himalayan West Bengal & Sikkim, Assam & Meghalaya and Nagaland, Manipur, Mizoram & Tripura; with lightning & gusty wind  at isolated places over Gangetic West Bengal and Jharkhand and with lightning at isolated places over Arunachal Pradesh, Andaman & Nicobar Islands, Tamilnadu, Puducherry & Karaikal and Kerala & Mahe.

Kindly download MAUSAM APP for location specific forecast & warning, MEGHDOOT APP for Agromet advisory and DAMINI APP for Lightning Warning & visit state MC/RMC websites for district wise warning.